CN108026937A - Air-supply arrangement and dust catcher - Google Patents

Air-supply arrangement and dust catcher Download PDF

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Publication number
CN108026937A
CN108026937A CN201680052101.0A CN201680052101A CN108026937A CN 108026937 A CN108026937 A CN 108026937A CN 201680052101 A CN201680052101 A CN 201680052101A CN 108026937 A CN108026937 A CN 108026937A
Authority
CN
China
Prior art keywords
impeller
radial
air
annular enclosure
supply arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201680052101.0A
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Chinese (zh)
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CN108026937B (en
Inventor
早光亮介
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Corp
Original Assignee
Nidec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nidec Corp filed Critical Nidec Corp
Publication of CN108026937A publication Critical patent/CN108026937A/en
Application granted granted Critical
Publication of CN108026937B publication Critical patent/CN108026937B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electric Suction Cleaners (AREA)

Abstract

Air-supply arrangement has motor, annular enclosure, impeller and impeller housing.Impeller has base portion and movable vane piece.Position of the impeller housing in the radial outer end than impeller in the outer part has the exhaust guide part extended to radial outside and downside.Annular enclosure has the annular enclosure outer edge of the annular enclosure upper surface part opposed in the axial direction with base portion and the position positioned at the radial outer end than impeller in the outer part.The outer surface of annular enclosure outer edge and the inner surface of exhaust guide part are configured across gap, and gap forms the flow path guided to the fluid flowed into from impeller, in gap, in the radial inner end than annular enclosure outer edge in the outer part and than the radial outer end region in the inner part of annular enclosure outer edge, shortest first width of the distance between the inner surface of outer surface and exhaust guide part with annular enclosure outer edge, the first width are less than fluid in gap and flow into the outflow opening width that the inlet opening width in gap and fluid are flowed out from gap.

Description

Air-supply arrangement and dust catcher
Technical field
The present invention relates to air-supply arrangement.Air-supply arrangement is for example equipped on dust catcher.
Background technology
The air-supply arrangement requirement for being equipped on dust catcher has static pressure.As such air-supply arrangement, such as there are Japanese Laid-Open public affairs Report the structure disclosed in special open 2011-80427 publications.Disclosed in Japanese Kokai special open 2011-80427 publications Air-supply arrangement has multiple bending sections in the outer circumferential side of multiple air guide elements and base portion side.Thus, it is recited as being capable of providing The high electric blowing machine of air supply efficiency.
Patent document 1：Japanese Kokai special open 2011-80427 publications
The content of the invention
The subject that the invention solves
In the air-supply arrangement described in Japanese Kokai special open 2011-80427 publications, from the air of impeller discharge Multiple bending sections on flow path for being connected from the outside of impeller via being arranged on in bracket and be discharged.However, in flow path In the short air-supply arrangement of length, multiple bending sections can not be formed, therefore can not the efficiency air to being flowed in flow path well Guide, therefore the turbulent flow of air is produced in flow path, the air supply efficiency of air-supply arrangement reduces.
It is an object of the present invention in air-supply arrangement, it can also improve and send in the case that the length of flow path is short Wind efficiency.
Means for solving the problems
The air-supply arrangement of one embodiment of the illustration of the present invention has：Motor, it has along in the up-down direction The axis of the central axis configuration of extension；Annular enclosure, it is located at leans on axis position to the upper side than the motor；Impeller, it is fixed In on the axis；And impeller housing, it, which surrounds the top of the impeller and radial outside, the impeller, has：Base portion, its The side vertical with the axis extends up；And movable vane piece, it is connected with the base portion, is circumferentially arranged with multiple described dynamic Blade, position of the impeller housing in the radial outer end than the impeller in the outer part have the row extended to radial outside and downside Gas guide portion, the annular enclosure have：Annular enclosure upper surface part, it is extended up in the side vertical with the axis, with the base Portions are opposed in the axial direction；And annular enclosure outer edge, its position positioned at the radial outer end than the impeller in the outer part are described The outer surface of annular enclosure outer edge and the inner surface of the exhaust guide part are configured across gap, and gap composition pair The flow path that the fluid flowed into from the impeller guides, it is inside in the footpath than the annular enclosure outer edge in the gap End has the outer of the annular enclosure outer edge in the outer part and than the radial outer end region in the inner part of the annular enclosure outer edge Surface is less than the gap with the distance between the inner surface of the exhaust guide part shortest first width, first width Described in fluid flow into the outflow opening width that the inlet opening width in the gap and the fluid are flowed out from the gap.
Invention effect
The air-supply arrangement of the embodiment illustrated according to the present invention, it is possible to increase the efficiency of air-supply arrangement.Also, It is capable of providing the dust catcher with such air-supply arrangement.
Brief description of the drawings
Fig. 1 is the sectional view for the air-supply arrangement for showing embodiment.
Fig. 2 is the exploded perspective view of the air-supply arrangement of embodiment.
Fig. 3 is the stereogram of the motor of embodiment from downside.
Fig. 4 is the stereogram of the stator of embodiment.
Fig. 5 is the exploded perspective view for showing stator, circuit board and lower cover.
Fig. 6 is the section plan of motor.
Fig. 7 is the explanatory drawin for the mounting means for showing turn-sensitive device, and is the vertical of the stator blade chip part from downside Body figure.
Fig. 8 be amplification show impeller, stator blade chip part, impeller housing a part sectional view.
Fig. 9 is the partial side view of stator blade chip part.
Figure 10 is the side view of stator blade chip part.
Figure 11 is the plan of the movable vane piece of impeller.
Figure 12 is the longitudinal section of the air-supply arrangement of second embodiment.
Figure 13 is the longitudinal section of the air-supply arrangement of the 3rd embodiment.
Figure 14 is the bottom view of the impeller of the 3rd embodiment.
Figure 15 is the amplification longitudinal section of the air-supply arrangement of the 4th embodiment.
Figure 16 is the stereogram of dust catcher.
Embodiment
Hereinafter, while one side illustrates the motor of embodiments of the present invention referring to the drawings.In addition, the model of the present invention Enclose and be not limited to following embodiment, can in the range of the technological thought of the present invention arbitrarily make a change.Also, with Under attached drawing in, for ease of understanding each structure, make actual construction and the engineer's scale of each construction or quantity etc. different sometimes.
Also, in the accompanying drawings, suitably show XYZ coordinate system as three-dimensional orthogonal coordinate system.In XYZ coordinate system, by Z Direction of principal axis is set to the axially in parallel direction with the central axis J shown in Fig. 1.X-direction is set to the side vertical with Z-direction To being the left and right directions in Fig. 1.Y direction is set to the direction vertical with both X-direction and Z-direction.
Also, the direction (Z-direction) that central axis J extends in the following description, is set to above-below direction.By Z axis The positive side (+Z sides) in direction is referred to as " upside (axial upside) ", and by the negative side (- Z sides) of Z-direction, referred to as " downside is (under axial direction Side) ".In addition, " above-below direction ", " upside " and " downside " simply to illustrate that and the title that uses, not to actual position Relation and direction are defined.It is also, unless otherwise stated, the direction (Z-direction) parallel with central axis J is simple Referred to as " axial direction ", " radial direction " is referred to as by the radial direction centered on central axis J, by the circumferential letter centered on central axis J Referred to as " circumferential direction ".
Fig. 1 is the sectional view for the air-supply arrangement for showing present embodiment.Fig. 2 is the decomposition of the air-supply arrangement of present embodiment Stereogram.
As depicted in figs. 1 and 2, air-supply arrangement 1 has motor 10, impeller 70, stator blade chip part 60 and impeller housing 80.
Stator blade chip part 60 is installed in the upside of motor 10 (+Z sides).Impeller housing 80 is installed in stator blade chip part 60 Upside.Impeller 70 is contained between stator blade chip part 60 and impeller housing 80.Impeller 70 is so as to rotating around central axis J Mode is installed on motor 10.
[motor]
Fig. 3 is the stereogram of the motor of present embodiment from downside.
As shown in Figure 1, motor 10 has housing 20, lower cover 22, stator 40, circuit board 50, lower side bearing 52a, upper shaft Hold 52b and the rotor 30 with axis 31.
Housing 20 is the cylindrical vessel for having lid for housing rotor 30 and stator 40.Perisporium 21 of the housing 20 with cylindrical shape, The upside bearing maintaining part 27 of upper cover part 23 positioned at the upper end of perisporium 21 and the central portion positioned at upper cover part 23.40 quilt of stator It is fixed on the medial surface of housing 20.Upside bearing maintaining part 27 is from the upwardly projecting tubular of the central portion of upper cover part 23.On Side bearing maintaining part 27 keeps upside bearing 52b in inside.
As shown in figures 1 and 3, it is provided with the upper side of the perisporium of housing 20 and extends radially through the housing upper of housing 20 Through hole 25,26.On the perisporium of housing 20, housing housing upper through hole 25 and three at is alternately configured with three around axis Top through hole 26 (with reference to Fig. 6).By the structure, can be flowed into from a part for the air of exhaust outlet 95 described later discharge Stator core 41 and coil 42 are cooled down in housing 20.Be provided between the perisporium 21 of housing 20 and upper cover part 23 around Stage portion 28 of the axis around upper cover part 23.
Lower cover 22 is installed in the opening portion of the downside of housing 20 (- Z sides).It is provided with the central portion of lower cover 22 from lower cover The downside bearing cage 22c for the tubular that the 22 downward pleurapophysis in lower surface goes out.Downside bearing cage 22c is to lower side bearing 52a Kept.
As shown in figure 3, the circular arc diametrically with width is provided with around three positions of axis on lower cover 22 The through hole 22a of shape.The outer circumference end of lower cover 22 is provided with notch 22b at three, notch 22b is by the periphery of lower cover 22 It is cut into what is linearly formed in portion.Gap between the openend 20a and notch 22b of the downside of housing 20 is the downside of motor 10 Opening portion 24.
As shown in Figure 1, there is rotor 30 axis 31, rotor magnet 33, downside magnet fixed component 32 and upper magnet to consolidate Determine component 34.Rotor magnet 33 is the cylindrical shape around axis (along θ z directions) surrounding axle 31 in radial outside.Downside magnet is consolidated It is the cylindrical shape with the diameter equal with rotor magnet 33 to determine component 32 and upper magnet fixed component 34.Downside magnet is fixed Component 32 and upper magnet fixed component 34 are installed on axis 31 in a manner of clamping rotor magnet 33 from axial both sides.Upper magnet Fixed component 34 has the small diameter portion 34a that diameter is less than downside (33 side of rotor magnet) in the upper portion of central axial direction.
Axis 31 is that can be rotated around axis (along θ z directions) by lower side bearing 52a and upside bearing 52b supportings.In axis 31 The end of upside (+Z sides) impeller 70 is installed.Impeller 70 is integratedly rotated with axis 31 around axis.
Fig. 4 is the stereogram of the stator 40 of present embodiment.Fig. 5 shows stator 40, circuit board 50 and lower cover 22 Exploded perspective view.Fig. 6 is the section plan of motor 10.
Stator 40 is located at the radial outside of rotor 30.Stator 40 surrounds rotor 30 around axis (along θ z directions).Such as Fig. 4 and Shown in Fig. 5, stator 40 has stator core 41, coil 42, multiple (three) upside insulating parts 43 and multiple (three) downsides Insulating part 44.
As shown in figure 5, stator core 41 has core-back 41a and multiple (three) teeth portion 41b.Core-back 41a is Around the ring-type of central axis.Core-back 41a has a structure in which：At three at line part 41c and three arc sections 41d around Axis alternately configures.Teeth portion 41b extends from the inner circumferential of line part 41c towards radially inner side respectively.Teeth portion 41b is circumferentially with equal Deng interval configuration.It is each configured with guiding exhaust to stator 40 on the upper surface of the arc sections 41d of core-back 41a The tilt component 46 of inner side.Tilt component 46 has with from radial outside towards inner side and the thinning shape of thickness.
Upside insulating part 43 is the insulating element of a part for the upper surface and side that cover stator core 41.Insulate upside Part 43 is correspondingly arranged with three teeth portion 41b respectively.Upside insulating part 43 has：Upside periphery wall portion 43a, it is located at core-back The upside of 41a；Upside inner circumferential wall portion 43e, it is located at the upside of the end of teeth portion 41b；And upside insulation division 43d, it is located at The upside at the position for coil winding of teeth portion 41b, upside periphery wall portion 43a and upside inner circumferential wall portion 43e are diametrically connected Knot gets up.
Lower-side insulation part 44 is the insulating element of a part for the lower surface and side that cover stator core 41.Lower-side insulation Part 44 is correspondingly arranged with three teeth portion 41b respectively.Lower-side insulation part 44 has：Lower outer periphery wall portion 44a, it is located at core-back The downside of 41a；Downside inner circumferential wall portion 44c, it is located at the downside of the end of teeth portion 41b；And lower-side insulation portion 44b, it is located at The downside at the position for coil winding of teeth portion 41b, lower outer periphery wall portion 44a and downside inner circumferential wall portion 44c are diametrically connected Knot gets up.
Upside insulating part 43 and lower-side insulation part 44 are configured to clip the teeth portion 41b of stator core 41 in the up-down direction. By the week of the teeth portion 41b of the lower-side insulation portion 44b coverings of the upside insulation division 43d of upside insulating part 43 and lower-side insulation part 44 Enclose and be wound with coil 42.
Three upside periphery wall portion 43a on the core-back 41a of stator core 41 are in the upside of stator core 41 Wound coil 42.Upside periphery wall portion 43a has the first side end face 43b and the second side end face 43c at circumferential both ends.First side End face 43b is relative to radial skew and towards the inclined plane of radial outside.Second side end face 43c is relative to radial skew And towards the inclined plane of radially inner side.The part on the line part 41c in the outer circumferential surface of upside periphery wall portion 43a be with The upside tabular surface 43f axially extended of the outer circumferential surface alignment of line part 41c.The circumferential both sides of tabular surface 43f in upside It is provided with the face of the arc-shaped along the inner peripheral surface configuration of housing 20.
As shown in fig. 6, adjacent upside periphery wall portion 43a is separated at a prescribed interval each other in the circumferential.On adjacent Upside periphery wall portion 43a, the first side end face 43b of a upside periphery wall portion 43a is with another upside periphery wall portion 43a's Second side end face 43c is arranged opposite in the circumferential.Inclined degrees and second side end face of the first side end face 43b relative to radial direction 43c is different relative to the inclined degree of radial direction.More specifically, the gap being formed between adjacent upside periphery wall portion 43a The circumferential width of the opening portion 90 of the radial outside of CL is less than the circumferential width of the opening portion 91 of radially inner side.
Configure the lower section that the tilt component 46 on core-back 41a is located at clearance C L.Tilt component 46 is sandwiched in first Between side end face 43b and the second side end face 43c.Clearance C L is located at the inner side of the housing upper through hole 26 than housing 20.Housing Top through hole 26 and clearance C L are vented air flow circuit of the guiding to the inner side of stator 40 for what will be flowed into from the outside of housing 20. From upside it was observed that clearance C L relative to radial direction incline direction (from radial outside towards the direction of inner side) with from stator blade The circumferential circulating direction for the exhaust that component 60 is released is consistent.That is, it is consistent with the direction of rotation of impeller 70.
As shown in fig. 6, the opening portion 90 of the entrance side by relatively increasing clearance C L, can be from housing upper through hole The more exhausts of 26 suctions, the width of the opening portion 91 by relatively reducing outlet side, can make the sky released from clearance C L Gas is more accurately towards position (coil 42) flowing aimed at.Thereby, it is possible to more efficient utilize and run through from housing upper 26 leaked-in air of hole cools down stator core 41 and coil 42.
Positioned at the downside of core-back 41a three lower outer periphery wall portion 44a stator core 41 downside wound coil 42.Adjacent lower outer periphery wall portion 44a has been spaced apart gap in the circumferential, but lower outer periphery wall portion 44a each other can also be Contact with each other in circumferential direction.The downside of the line part 41c positioned at core-back 41a in the outer circumferential surface of lower outer periphery wall portion 44a Part is the downside tabular surface 44d axially extended to align with the outer circumferential surface of line part 41c.In the week of downside tabular surface 44d To both sides be provided with along housing 20 inner peripheral surface configuration arc-shaped face.
Multiple (the being in the example shown three) plate-like portions 45 axially extended are provided with the tabular surface 44d of downside.Such as Fig. 6 Shown, plate-like portion 45 is generally perpendicularly stood on the tabular surface 44d of downside.The end of the radial outside of plate-like portion 45 reaches housing 20 Inner peripheral surface.Region between lower outer periphery wall portion 44a and housing 20 is circumferentially divided into multiple regions by plate-like portion 45.
As shown in figures 1 to 6, circuit board 50 is configured between stator 40 and lower cover 22.Circuit board 50 has circular rings The main part 50a of shape and protruding outside three from from the outer peripheral edge of main part 50a to the direction relative to radial skew are prominent Portion 50b.Main part 50a has the through hole inserted for axis 31.Circuit board 50 is fixed on lower-side insulation part 44.
As shown in fig. 6, three turn-sensitive devices 51 are at least installed on circuit board 50.Turn-sensitive device 51 is, for example, suddenly That element.Circuit board 50 can be electrically connected with coil 42.In this case, can to the drive circuit of 42 output drive signal of coil With on circuit board 50.
Fig. 7 is the explanatory drawin for the mounting means for showing turn-sensitive device 51.
As shown in Figure 6 and Figure 7, turn-sensitive device 51 is configured to be sandwiched in circumferentially adjacent downside inner circumferential wall portion 44c's Between terminal part.Three turn-sensitive devices 51 are in the circumferential with every 120 ° of configuration at equal intervals.The radial direction of turn-sensitive device 51 The face of inner side is opposed with rotor magnet 33.In this case, rotor magnet 33 is configured at the axial of rotor 30 Central part.Therefore, turn-sensitive device 51 is connected by pin 51a with circuit board 50, pin 51a have with from circuit board 50 The length suitable to the axial length of rotor magnet 33.It is circumferentially adjacent by being configured to be clipped in by three turn-sensitive devices 51 Between the terminal part of downside inner circumferential wall portion 44c, for example, with downside magnet fixed component 32 lower section sensors configured magnet simultaneously And compared in the construction of the lower section of sensor-magnet configuration turn-sensitive device 51, the axial length of motor 10 can be shortened.
Can also be in the mechanism that the setting of the terminal part of downside inner circumferential wall portion 44c supports turn-sensitive device 51.For example, The recess being inserted into for turn-sensitive device 51 is set, so as to limit the movement of the radial direction of turn-sensitive device 51.Alternatively, can also Turn-sensitive device 51 is fixed on downside inner circumferential wall portion 44c using fastener etc..
Lower cover 22 is installed at the openend 20a for the housing 20 for containing stator 40 and circuit board 50.Under as shown in Figure 1, At least a portion of three through hole 22a of lid 22 is located at the outer circumference end of the main part 50a than circuit board 50 by radial outside Position.
The notch 22b of the periphery of lower cover 22 be configured to when observing vertically with the line part 41c of stator core 41, The upside tabular surface 43f of upside insulating part 43 and the downside tabular surface 44d of lower-side insulation part 44 are roughly the same.Under motor 10 The exhaust outlet of air flow circuit FP of the open lower side portion 24 on surface between stator 40 and housing 20.
[stator blade chip part, impeller, impeller housing]
Next, stator blade chip part 60, impeller 70, impeller housing 80 are illustrated.
Fig. 7 is the stereogram of the stator blade chip part 60 from downside.Fig. 8 be amplification show impeller 70, stator blade chip part 60, The sectional view of a part for impeller housing 80.Fig. 9 is the partial side view of stator blade chip part 60.
＜ stator blade chip parts ＞
As depicted in figs. 1 and 2, stator blade chip part 60 has the first stator blade chip part 61a and ring-type cover portion 61b.First is quiet Blade part 61a and ring-type cover portion 61b are laminated and are installed on the upper surface of motor 10 vertically.
First stator blade chip part 61a has lower part stator blade support ring 62,63, three linking parts 64 of installing ring and multiple Lower part stator blade 67b.Lower part stator blade support ring 62 and installing ring 63 are configured to three linking parts coaxially, radially extended 64 link up.Three linking parts 64 are circumferentially with every 120 ° of configuration at equal intervals.Linking part 64 have axially through Through hole 64a.Three through hole 64a are circumferentially with every 120 ° of configuration at equal intervals.Installing ring 63 on an upper have with The concentric groove 63a of installing ring 63.
Multiple lower part stator blade 67b are protruded from the periphery of lower part stator blade support ring 62 towards radial outside.Multiple lower parts Stator blade 67b is circumferentially configured at equal intervals.The outer circumferential surface of lower part stator blade support ring 62 is directed towards upside and cone that end narrows Shape.Lower part stator blade 67b has with towards upside and shape that radial width becomes larger.
Ring-type cover portion 61b has：The cricoid annular enclosure planar portions 66a of plectane；Cylindric top stator blade support ring 66b, it extends from the outer peripheral edge of annular enclosure planar portions 66a towards downside；Multiple top stator blade 67a；Outlet 65, its with it is upper The radial outside connection of portion stator blade 67a；And circular protuberance 66c, its from the outer peripheral edge of annular enclosure planar portions 66a to Upside protrudes.Multiple top stator blade 67a are diametrically by the outer circumferential surface and outlet 65 of top stator blade support ring 66b Side face links up.Top stator blade support ring 66b has the stage portion that the outer circumferential side in bottom extends throughout complete cycle 66d。
As shown in figure 8, annular enclosure planar portions 66a has：Installing ring 68, it prolongs from the lower surface of central portion towards downside Stretch；And three cylindrical protrusions 69, they go out from the downward pleurapophysis in lower surface of annular enclosure planar portions 66a.Installing ring 68 has circle The canister portion 68a of the tubular and protuberance 68b of annular shape, protuberance 68b is on the end face of the downside of canister portion 68a outside radial direction The downward side of circumference protrudes.Three cylindrical protrusions 69 have equal diameter and height, circumferentially to match somebody with somebody at equal intervals every 120 ° Put.In the present embodiment, cylindrical protrusion 69 is hollow, have in the center of the end face 69a of downside axially through pass through Perforate 69b.
As shown in Fig. 1 and Fig. 9, the upside bearing maintaining part 27 of motor 10 is inserted into the peace of the first stator blade chip part 61a In dress circle 63.The lower face of the lower part stator blade support ring 62 of first stator blade chip part 61a and the court of the stage portion 28 of motor 10 Step surface 28a contacts to the upper side.
Ring-type cover portion 61b is installed on the first stator blade chip part 61a.As shown in figure 9, upside bearing maintaining part 27 is inserted into In the installing ring 68 of ring-type cover portion 61b.The protuberance 68b of the downside end of installing ring 68 is embedded in the first stator blade chip part 61a Groove 63a in.The stage portion 66d of the top stator blade support ring 66b of ring-type cover portion 61b and lower part stator blade support ring 62 Upside openend is fitted together to.The outer circumferential surface of top stator blade support ring 66b and the outer circumferential surface of lower part stator blade support ring 62 are upper and lower Smoothly connected on direction.
The cylindrical protrusion 69 of ring-type cover portion 61b is inserted into the through hole 64a of the first stator blade chip part 61a.Cylinder is convex The end face 69a in portion 69 and the upper surface of the upper cover part 23 of motor 10.Using insert in cylindrical protrusion 69 through hole 69b and Bolt B T in the threaded hole 23a of upper cover part 23 and ring-type cover portion 61b and motor 10 are tightened together.First stator blade chip part 61a is positioned in the circumferential by the cylindrical protrusion 69 of ring-type cover portion 61b, quiet by the installing ring 68 of ring-type cover portion 61b and top Supporting blades circle 66b is pressed and is fixed on motor 10.
In the present embodiment, stator blade chip part 61 is by two components (the first stator blade chip part 61a, ring-type cover portion 61b) Form, and be only ring-type cover portion 61b with the fastening of the housing 20 of the metal of motor 10.By using such fixed form, energy In the temperature of air-supply arrangement 1, there occurs the tightening state generation between motor 10 and stator blade chip part 60 during change is bad for enough suppression Situation.
If illustrating, it is assumed that inserted making common bolt B T in the first stator blade chip part 61a and ring-type cover portion 61b Both sides and in the case of being fastened to motor 10, bolt B T locks two resin components, is caused by temperature change Volume change become larger.In this way, shunk at low ambient temperatures there are stator blade chip part 60 and produce the possibility of loosening.With this phase It is right, in the present embodiment, the end face 69a of the cylindrical protrusion 69 of ring-type cover portion 61b is contacted with housing 20 and use bolt BT is fastened, therefore can be reduced by the thickness of the bolt B T resin components fixed.Thus, volume change during temperature change Amount diminishes, therefore can suppress fastening and loosen.
Figure 10 is the side view of stator blade chip part 60.
As shown in Figure 10, top stator blade 67a and lower part stator blade 67b are configured with identical quantity in the circumferential.Top Stator blade 67a and lower part stator blade 67b is correspondingly in axial configuration side by side.In this case, top is quiet Blade 67a is more than lower part stator blade 67b relative to axial angle of inclination relative to axial angle of inclination.In order to make to leaf The exhaust efficiency that the inclined side in direction of rotation of wheel 70 flows up is flowed between the stator blade 67a of top well, and top is quiet Blade 67a is configured with bigger angle tilt.Lower part stator blade 67b will be vented guiding downwards so that being released from exhaust outlet 95 Exhaust will not be flowed to radial outside.
In the present embodiment, gap 67c is the gap extended in the horizontal direction but it is also possible to be relative to level The gap that the inclined side in direction upwardly extends.In the case of using the gap that in an inclined direction extends, it is preferred to use be with The identical direction of the incline direction of top stator blade 67a.By the gap of incline direction as setting, it is vented through gap, Whole exhaust flow path 93 can efficiently be utilized.
In the present embodiment, as shown in figure 9, near exhaust outlet 95, exhaust flow path 93 is moved to radial outside. That is, the outer circumferential surface of the lower part stator blade support ring 62 of the first stator blade chip part 61a be with towards downside and cone that diameter becomes larger Shape.Also, it is in the outlet 65 of ring-type cover portion 61b, diametrically 65b is enclosed in opposed lower part with lower part stator blade support ring 62 The widened skirt in inner circumferential footpath on the downside of being directed towards.By these structures, exhaust flow path 93 is maintaining footpath with towards downside To width while to radial direction outer expandable.In this way, the horizontal sectional area of exhaust flow path 93 with close to exhaust outlet 95 and Become larger.Thereby, it is possible to reduce from exhaust outlet 95 release air when exhaust sound.
＜ impellers ＞
Impeller 70 will be radially oriented outside via internal flow path from the fluid that the air inlet 70a of upward side opening is sucked Release.Impeller 70 has impeller bodies 71 and impeller hub 72.
Impeller bodies 71 have base portion 73, shield 75 and multiple movable vane pieces 74.Base portion 73 is discoid, in center Portion have axially through through hole 73a.It is upwardly projecting conical surface-shaped around the through hole 73a of base portion 73 Inclined plane part 73b.Movable vane piece 74 be extend on the upper surface of base portion 73 from the inner side of radial direction towards outside, to circumferential skewing Plate-shaped member.Movable vane piece 74 axially erects configuration.Shield 75 is directed towards axial upside and cylindrical shape that end narrows. The central opening portion of shield 75 is the air inlet 70a of impeller 70.Base portion 73 and shield 75 are connected by movable vane piece 74.
Figure 11 is the plan of the movable vane piece 74 of impeller 70.
As shown in figure 11, multiple movable vane pieces 74 are circumferentially (along θZDirection) configure on the upper surface of base portion 73.Such as Fig. 1 Shown, movable vane piece 74 is axially vertically erect from the upper surface of base portion 73.
In the present embodiment, three kinds of movable vane pieces 74 circumferentially configure at equal intervals between identical species.In this implementation In mode, multiple movable vane pieces 74 include multiple (three) the first movable vane piece 74a, multiple (three) the second movable vane piece 74b and more A (six) the 3rd movable vane piece 74c.Three the first movable vane piece 74a are circumferentially with every 120 ° of configuration at equal intervals.Second movable vane Piece 74b is configured at the centre position of the first adjacent movable vane piece 74a in the circumferential.Three the second movable vane piece 74b are also circumferentially With every 120 ° of configuration at equal intervals.It is dynamic that 3rd movable vane piece 74c is configured at adjacent the first movable vane piece 74a and second in the circumferential The centre position of blade 74b.Six the 3rd movable vane piece 74c are circumferentially with every 60 ° of configuration at equal intervals.
Movable vane piece 74 has at viewed in plan (observation of XY faces) on the upper surface of base portion 73 to be extended curvature.Movable vane One end of piece 74 is located at the outer peripheral edge of base portion 73.The other end of movable vane piece 74 is located at more inside by footpath than the outer peripheral edge of base portion 73 The position of side.
That is, the first movable vane piece 74a, the second movable vane piece 74b, the end of radial outside of the 3rd movable vane piece 74c are all located at base The outer peripheral edge of portions 73.On the other hand, the end P1 of the inner circumferential side of the first movable vane piece 74a is located most closely to the center of base portion 73 Position.The end P2 of the inner circumferential side of second movable vane piece 74b leans on the position of radial outside positioned at the end P1 than the first movable vane piece 74a Put.The end P3 of the inner circumferential side of 3rd movable vane piece 74c is positioned at the end P2 than the second movable vane piece 74b further by radial outside Position.By the structure, the turbulent flow in impeller 70 can be reduced, therefore the air supply efficiency of impeller 70 improves.
First movable vane piece 74a, the second movable vane piece 74b and the 3rd movable vane piece 74c have to be bent to counterclockwise The shape of arch.
First movable vane piece 74a is made of four different circular arcs of radius of curvature.The blade face of the convex of first movable vane piece 74a 74d has three flex points CP11, CP12, CP13 in the longitudinal direction.
Second movable vane piece 74b is made of three different circular arcs of radius of curvature.The blade face of the convex of second movable vane piece 74b 74e has two flex points CP21, CP22 in the longitudinal direction.
3rd movable vane piece 74c is made of two different circular arcs of radius of curvature.The blade face of the convex of 3rd movable vane piece 74c 74f has a flex point CP31 in the longitudinal direction.
In the present embodiment, the flex point CP11 of the first movable vane piece 74a, the flex point CP21 of the second movable vane piece 74b and The flex point CP31 of three movable vane piece 74c is configured in base portion 73 on identical radial location C1.Also, the first movable vane piece 74a The radius of curvature of the part than radial location C1 in the outer part, the part than radial location C1 in the outer part of the second movable vane piece 74b Radius of curvature and the 3rd movable vane piece 74c the part than radial location C1 in the outer part radius of curvature it is consistent with each other.
Secondly, the flex point CP12 of the first movable vane piece 74a, the flex point CP22 and the 3rd movable vane piece 74c of the second movable vane piece 74b End P3 be configured in base portion 73 on identical radial location C2.Also, the radial location C1 of the first movable vane piece 74a with The radius of curvature of part between C2, the second movable vane piece 74b radial location C1 and C2 between part radius of curvature and The radius of curvature of part between the radial location C1 and C2 of 3rd movable vane piece 74c is consistent with each other.
Also, the end P2 of the flex point CP13 of the first movable vane piece 74a and the second movable vane piece 74b are configured in base portion 73 On identical radial location C3.Also, the radius of curvature of the part between the radial location C2 and C3 of the first movable vane piece 74a and The radius of curvature of part between the radial location C2 and C3 of second movable vane piece 74b is consistent with each other.
The movable vane piece 74 (74a~74c) of present embodiment make in each region of the radial direction of impeller 70 blade face 74d~ The radius of curvature of 74f is different.On the other hand, even (the movable vane piece of the first movable vane piece 74a~the 3rd of different types of movable vane piece 74 74c), the part for belonging to the region of identical radial direction is also set at mutually the same radius of curvature.
In the present embodiment, when observing vertically, radial location C3 is consistent with the air inlet 80a of impeller housing 80.Cause This, the part of the side more inner than flex point CP13 of the first movable vane piece 74a is only configured with the inner side of air inlet 80a.
Impeller hub 72 has：Canister portion 72a, it is axially extended；Discoid flange part 72b, it is outside canister portion 72a The lower part of side face is extended to radial outside；And multiple convex portion 72c, they are upwardly projecting from the upper surface of flange part 72b.Cylinder The inclined plane part 72d for the taper that terminal parts of the portion 72a in upside narrows with end.
Impeller hub 72 is installed in leaf by the way that canister portion 72a is inserted in the through hole 73a of base portion 73 from downside Wheel body 71.Canister portion 72a can be pressed into through hole 73a, binding agent etc. can also be used to be fixed.Impeller hub 72 Flange part 72b from lower side bearing impeller bodies 71.Convex portion 72c on flange part 72b is embedded in the lower surface of base portion 73 In recess 73c.By the chimeric of convex portion 72c and recess 73c, impeller bodies 71 and the relative movement in the circumferential direction of impeller hub 72 Limited.
By making impeller hub 72 that there is flange part 72b, can utilize flange part 72b radial direction it is a wide range of in from below Support impeller bodies 71.Thereby, it is possible to stably be kept to impeller 70, stability when rotating at a high speed becomes higher.That is, due to Flange part 72b can be utilized in a wide range of interior supporting impeller bodies 71, therefore it is opposite to reduce impeller 70 from below of radial direction In the vibration of axis 31.
In impeller 70, the inclined plane part 72d of the end of the canister portion 72a of the impeller hub 72 and inclined plane part 73b of base portion 73 Smoothly connect in the up-down direction.Inclined plane part 72d and inclined plane part 73b forms the stream that will be sucked from the air inlet 70a of impeller 70 Body guides the circular inclined-plane 70b to radial outside.
By forming circular inclined-plane 70b by impeller bodies 71 and impeller hub 72, even if not increasing the oblique of base portion 73 Facial 73b, by increasing the length of canister portion 72a (inclined plane part 72d), can also increase the maximum height of circular inclined-plane 70b.Cause This, can suppress the increase of the thickness of base portion 73 and realize the circular inclined-plane 70b of ideal form.
Impeller hub 72 is preferably metal.Thereby, it is possible to link up axis 31 and impeller 70 securely.Therefore, Impeller 70 can be made stably to rotate at a high speed.Also, since inclined plane part 72d can be made to be metal covering, annular shape can be made The surface smoothing of the upside end of inclined-plane 70b.
Impeller 70 is fixed in axis by the way that the upper end of axis 31 is embedded in the canister portion 72a of impeller hub 72 from downside On 31.As shown in Fig. 1 and Fig. 9, the impeller 70 linked with axis 31 is configured at the circular protuberance 66c's of ring-type cover portion 61b Inner side.Therefore, protuberance 66c is located near the exhaust outlet 70c of impeller 70.
The exhaust guide part 83 of protuberance 66c and impeller housing 80 described later together by the exhaust released from impeller 70 guide to Downside.In the present embodiment, the outer circumferential surface of protuberance 66c is with being radially oriented outside and inclined inclined plane downwards 66e.The outer circumferential surface of protuberance 66c is the smooth curve form protruded laterally.
The lower end of the outer circumferential surface of protuberance 66c and the outer circumferential surface of cylindric top stator blade support ring 66b smoothly connect It is continuous.Therefore, the lower end of protuberance 66c angle of inclination relative to horizontal direction is substantially 90 °.The upper end of protuberance 66c is located at The outside being close to of the radial direction of the outer circumference end of the base portion 73 of impeller 70.The upper end of protuberance 66c is located at than base portion 73 The upper position in lower surface, on the other hand, positioned at the position of the upper surface of the outer circumference end than base portion 73 on the lower.
In the air-supply arrangement 1 of present embodiment, by making protuberance 66c that there is above-mentioned shape and configuration, it can incite somebody to action Guide downwards without making its movement disorder the smooth air released from impeller 70.Under the exhaust outlet 70c of impeller 70 End, air is released from the outer circumference end of base portion 73 in a generally horizontal direction.In the present embodiment, it is upper due to protuberance 66c Position of the end positioned at the upper surface than base portion 73 on the lower, therefore the air released will not be collided with protuberance 66c, and by edge The outer circumferential surface guiding of protuberance 66c.Thereby, it is possible to efficiency to convey air well.Also, by setting protuberance 66c, energy The air discharged from exhaust outlet 70c to radial outside is enough reduced to be flowed between the axial direction between ring-type cover portion 61b and base portion 73 In gap.
＜ impeller housings ＞
Impeller housing 80 has air inlet 80a in upside, is directed towards axial upside and cylindrical shape that end narrows.Impeller housing 80 Have：Inlet guide portion 81, it is located at the openend of air inlet 80a；Impeller housing main part 82, it houses impeller 70；And skirt The exhaust guide part 83 of shape, it is radially oriented outside and downside extension from the outer peripheral edge of impeller housing main part 82.
Impeller housing main part 82 has the cross sectional shape for the shield 75 for imitating impeller 70.The medial surface of impeller housing main part 82 (lower surface) and the lateral surface (upper surface) of shield 75 are opposed with homogeneous interval.
The circular air inlet that oriented radially inner side protrudes is configured in the upper end of the inner circumferential side of impeller housing main part 82 to draw Lead portion 81.As shown in figure 9, upper surface 75b of the inlet guide portion 81 from upside covering shield 75.Following table in inlet guide portion 81 There is the narrow gap of the width radially extended between face and the upper surface 75a of shield 75.
The periphery side end 82a of impeller housing main part 82 is bent in a manner of downward gusset is around the outer circumference end of shield 75. Exist between the inner peripheral surface of periphery side end 82a and the end face outside of shield 75 to the narrow gap of the width of axial upside extension.
Radially inner side of the exhaust guide part 83 in lower face has throughout whole circumferential stage portion 83a.Such as Fig. 9 institutes Show, stage portion 83a is chimeric with the stage portion 65a of the outlet 65 of ring-type cover portion 61b.The inner peripheral surface of exhaust guide part 83 and periphery The inner peripheral surface of circle 65 smoothly connects in the up-down direction, forms the wall of the outer circumferential side of exhaust flow path.
The periphery of the inner peripheral surface of exhaust guide part 83 and the protuberance 66c of the ring-type cover portion 61b positioned at the downside of impeller 70 Face together constitute with will from impeller 70 to radial outside release exhaust guiding to downside exhaust flow path 92.Exhaust guide part 83 has There are guide portion inner recess 83b and guide portion inner projection 83c.Guide portion inner recess 83b is the concave position of inner peripheral surface.Draw It is to be located at the position heaved than guide portion inner recess 83b positions on the lower and inner peripheral surface to lead portion inner projection 83c.Tilt The distance between face 66e and inner peripheral surface of exhaust guide part 83 are in region opposed with inclined plane 66e guide portion inner projection 83c To be most short.Thus, the efficiency of air-supply arrangement 1 improves.That is, when being discharged air to radial outside using impeller 70, air leads to Cross the shortest region of the distance between inclined plane 66e and the inner peripheral surface of exhaust guide part 83.In the region, the sectional area office of flow path Portion narrows, therefore static pressure becomes higher, and the flowing for reducing the air at the inner peripheral surface and inclined plane 66e of exhaust guide part 83 produces stripping From situation.Therefore, reduce produced in the flow path being formed between the inner peripheral surface of inclined plane 66e and exhaust guide part 83 it is disorderly The situation of stream, can guide well in flow path internal efficiency, therefore the efficiency of air-supply arrangement 1 improves.
As shown in figure 9, exhaust flow path 92 is connected with the exhaust flow path 93 of stator blade chip part 60.As shown in Figure 10, stator blade The exhaust flow path 93 of component 60 is made of the flow path between the flow path between the stator blade 67a of top and lower part stator blade 67b.Exhaust Flow path 93 and the connecting portion of external connection are exhaust outlet 95.
＜ air-supplies act ＞
The air-supply arrangement 1 of present embodiment rotates impeller 70 by using motor 10, as shown in Figure 1, by air from into Gas port 80a is drawn into impeller 70, and air is released to radial outside via the air flow circuit in impeller 70.Released from impeller 70 Exhaust be flowed into via exhaust flow path 92 in the region between the stator blade 67a of top.Top stator blade 67a carries out exhaust Rectification and to downside release.Lower part stator blade 67b while making the flow direction of exhaust towards downside by the exhaust guide to Radial outside.Then, it is vented the outside that air-supply arrangement 1 is discharged to from exhaust outlet 95.
A part for the exhaust released from exhaust outlet 95 to downside is along the periphery of the housing 20 of motor 10 effluent downwards It is dynamic.Also, the another part for the exhaust released from exhaust outlet 95 is flowed from the housing upper through hole 25,26 set on the housing 20 Enter to the inside of motor 10.
The exhaust that a part for the inside of motor 10 has been flowed into via housing upper through hole 25 is flowed into shown in Fig. 6 In air flow circuit FP between stator 40 and housing 20.In air flow circuit FP, downward side flowing is vented.In air flow circuit FP It is interior, as shown in figure 4, the outer circumferential surface of line part 41c (stator core 41) exposes and is cooled down by exhaust.Configured in air flow circuit FP There are multiple plate-like portions 45, rectification is carried out to the exhaust circulated in air flow circuit FP.By the structure, flowed in air flow circuit FP The air supply efficiency of logical exhaust improves.The exhaust circulated in air flow circuit FP is from the open lower side portion 24 of motor 10 by downwards Discharge.
As shown in fig. 6, the exhaust of the part in motor 10 has been flowed into via gap via housing upper through hole 26 CL flows into the inner side of stator 40.The first side end face 43b, the second side end face 43c and the tilt component 46 for forming clearance C L will be logical The exhaust for crossing clearance C L is directed to the side of coil 42.That is, compared with being not provided with the situation of tilt component 46, can reduce from Clearance C L by the upper surface of exhaust and arc sections 41d collide and cause the situation that exhaust efficiency reduces.Pass through the structure, energy Enough efficiency well cools down the coil 42 of the heating position as motor 10.It is vented around coil 42 downward Flowing, is discharged downwards from the through hole 22a of 10 lower surface of motor.
In the air-supply arrangement 1 of present embodiment, configured around the cricoid exhaust outlet 95 of axis more top than motor 10 The position of side.Thus, without setting the air channel member for being vented in the radially outer peripheral side of motor 10.As a result energy Enough use the motor 10 of diameter bigger, it is possible to increase diameter of the draft capacity without increasing air-supply arrangement 1.Alternatively, can be Maintain to minimize air-supply arrangement 1 in the state of draft capacity.
In addition, as long as the configuration of exhaust outlet 95 is in the position more upper than stator 40.Due to motor 10 ability with it is straight The relation in footpath is determined by the size of stator 40, as long as therefore exhaust outlet 95 configure in position at least more upper than stator 40 Put, it becomes possible to which exhaust outlet 95 is configured into the position in the diameter than motor 10 in the inner part.
Also, in the present embodiment, air-supply arrangement 1 has three clearance C L and three air flow circuit FP.Pass through the knot Structure, well can cool down stator core 41 and coil 42 using the air efficiency that radially inner side is flowed into from clearance C L, Stator core 41 can be cooled down using the air flowed vertically through air flow circuit FP.
＜ variations ＞
More than, an embodiment of the illustration of the present invention is illustrated, but the invention is not restricted to above-mentioned implementation Mode.
Figure 12 is the longitudinal section of the air-supply arrangement 101 of the variation of an embodiment of above-mentioned illustration.In addition, close In this variation, pair structural element identical with an above-mentioned embodiment marks identical label, and the description thereof will be omitted.
Air-supply arrangement 101 has motor 10, ring-type cover portion 166, impeller 70 and impeller housing 180.Motor 10 have along The axis 31 of the central axis J configurations extended in the up-down direction.The radial outer end of motor 10 is located at the radial outer end than impeller 70 By the position of radial outside.
Impeller 70 is fixed on axis 31.Impeller 70 has base portion 73, shield 75 and multiple movable vane pieces 74.Base portion 73 be the flat component extended up in the side vertical with axis 31.Shield 75 is located at the position more upper than base portion 73, And upward side opening.Multiple movable vane pieces 74 are connected with base portion 73 and shield 75, are circumferentially arranged.
Impeller housing 180 surrounds top and the radial outside of impeller 70.Impeller housing 180 has exhaust guide part 183.Exhaust is drawn The position of portion 183 in the radial outer end than impeller 70 in the outer part is led to radial outside and downside to extend.Impeller housing 180 is than ring-type The position that the bottom of cover portion 166 is upper has exhaust outlet 195.Thus, in exhaust outlet 195 positioned at more upper than motor 10 In the case of position, even in the length for being formed in flow path between inclined plane 166e described later and the inner peripheral surface of exhaust guide part 183 Spend it is short in the case of, can also improve the air supply efficiency of air-supply arrangement 101.That is, since flowing path section can be formed in flow path The region that product locally narrows, therefore the static pressure of air stream becomes higher in the region, is peeled off so as to reduce the air in flow path And produce the situation of turbulent flow.
Ring-type cover portion 166 is located at leans on axis position to the upper side than motor 10.Ring-type cover portion 166 has annular enclosure planar portions 166a and protuberance 166c.Annular enclosure planar portions 166a is extended up in the side vertical with axis 31, with base portion 73 in the axial direction It is opposed.Positions of the protuberance 166c in the radial outer end than impeller 70 in the outer part is more upwardly projecting than annular enclosure planar portions 166a. Protuberance 166c has inclined plane 166e.The outer circumferential surface of inclined plane 166e tilts downwards with outside is radially oriented.
The inner radial position of protuberance 166c is identical with the inner radial position of exhaust guide part 183.That is, it is vented Guide portion 183 is smoothly bent with from the inner towards outside to radial outside and downside.Also, the inclination of protuberance 166c Face 166e is smoothly bent with from the inner towards outside to radial outside and downside.Thus, from the air quilt of impeller discharge Exhaust guide part 183 and inclined plane 166e are smoothly guided to radial outside and downside.Thus, in flow path, can reduce The turbulent situation of the inner peripheral surface of impeller housing 180 generation air nearby and near inclined plane 166e, therefore air-supply arrangement 101 Air supply efficiency improves.
Exhaust guide part 183 has guide portion inner recess 183b and guide portion inner projection 183c.It is recessed on the inside of guide portion Portion 183b is the concave position of inner peripheral surface.Guide portion inner projection 183c is positioned at than guide portion inner recess 183b on the lower The position that position and inner peripheral surface are heaved.The distance between inclined plane 166e and the inner peripheral surface of exhaust guide part 183 are in guide portion Region opposed with inclined plane 166e side convex portion 183c is most short.Thus, the efficiency of air-supply arrangement 101 improves.That is, leaf is being utilized Wheel 70 by air to radial outside discharge when, air by between inclined plane 166e and the inner peripheral surface of exhaust guide part 183 away from From shortest region.In the region, since the sectional area of flow path locally narrows, static pressure becomes higher, and reduces and draws in exhaust Lead the situation for causing the flowing of air to be peeled off at the inner peripheral surface and inclined plane 166e in portion 183.Therefore, reduce and be formed in inclination The situation of turbulent flow is produced in flow path between face 166e and the inner peripheral surface of exhaust guide part 183, can be good in flow path internal efficiency Ground guides, therefore the efficiency of air-supply arrangement 101 improves.
Air-supply arrangement 101 has inboard row gas port 196.Exhaust outlet 195 and inboard row gas port 196 are matched somebody with somebody circumferentially alternatingly Put.A part for the air discharged by impeller 70 to radial outside is arranged by flow path, and via exhaust outlet 195 to radial outside Go out.On the other hand, another part of the air of radial outside has been discharged to by impeller 70 by flow path, and via inboard row gas port 196 are directed into the inner side of motor 10.
Ring-type cover portion 166 has annular enclosure connecting portion 166f between exhaust outlet 195 and inboard row gas port 196.Annular enclosure At least a portion of connecting portion 166f is fixed.That is, at least one of at least a portion of impeller housing 180 and ring-type cover portion 166 Divide and fixed.Thereby, it is possible to accurately assemble impeller housing 180 and ring-type cover portion 166.That is, impeller can accurately be managed The inner peripheral surface of shell 180 and the position relationship of ring-type cover portion 166.Thereby, it is possible to precisely be formed in the inner circumferential of impeller housing 180 The sectional area of the flow path formed between face and inclined plane 166e, therefore the non-uniform feelings that air pressure is produced in flow path can be reduced Condition.Further, it is possible to reduce the vibration of impeller housing 180.
Figure 13 is the longitudinal section of the air-supply arrangement 201 of the 3rd embodiment of the illustration of the present invention.In addition, on the 3rd The air-supply arrangement 201 of embodiment, pair structural element identical with above-mentioned air-supply arrangement 1 or air-supply arrangement 101, marks sometimes Identical label, and the description thereof will be omitted.
Air-supply arrangement 201 has motor 210, annular enclosure 261b, impeller 270 and impeller housing 280.Motor 210 has edge The axis 231 of the central axis J configurations extended in the up-down direction.Motor 210 is outer-rotor type but it is also possible to be internal rotor Type.
Impeller 270 is fixed on axis 231.Impeller 270 is by lower side bearing 252a and upside bearing 252b supportings can Rotated around central axis J.Impeller 270 has base portion 273 and movable vane piece 274.Base portion 273 is in the side vertical with axis 231 Extend up.Wherein, the position of the radial outside of base portion 273 is the tabular extended up in the side vertical with axis 231, pedestal The position of the radially inner side in portion 273 is with from inner side towards outside and smoothly to the inclined-plane of axial downside extension.Thus, energy It is enough smoothly to guide the fluid discharged by impeller 270 to radial outside.In addition, base portion 273 can also be it is overall with axis The tabular or entirety that 231 vertical sides extend up smoothly expand with from inner side towards outside to axial downside The flexure plane of exhibition.Movable vane piece 274 is connected with base portion 273, is circumferentially arranged with multiple movable vane pieces 274.In addition, movable vane piece 274 components that can be formed as one with base portion 273, can also be formed as the component of split with base portion 273.
Impeller housing 280 surrounds top and the radial outside of impeller 270.Impeller housing 280 is leaned in the radial outer end than impeller 270 The position in outside has the exhaust guide part 283 extended to radial outside and downside.Exhaust guide part 283 has on the inside of guide portion Recess 283b and guide portion inner projection 283c.Guide portion inner recess 283b is inner surface to the concave position of radial outside. The radial inner end 283d of the inner surface of exhaust guide part is configured in the radial outer end position in the outer part than impeller 270.Thus, Guide portion inner recess is disposed on the position of the radial outer end position in the outer part than impeller 270.Guide portion inner projection 283c is disposed on leans on the portion that axially position of downside and inner surface are heaved to radially inner side than guide portion inner recess 283b Position.Guide portion inner projection 283c is disposed on than guide portion inner recess 283b by the position of radial outside and axial downside Position.
Annular enclosure 261b is located at leans on axis position to the upper side than motor 210.Annular enclosure 261b and above-mentioned air-supply arrangement 1 and The ring-type cover portion 61b of air-supply arrangement 101 and 166 is corresponded to.Annular enclosure 261b has outside annular enclosure upper surface part 266a and annular enclosure Edge 266c.Annular enclosure upper surface part 266a is extended up in the side vertical with axis 231, opposed in the axial direction with base portion 273. In addition, annular enclosure upper surface part 266a may not be the tabular extended up in the side vertical with axis 231.Annular enclosure upper table A part of facial 266a can also be tilted for example downwards with outside is radially oriented.
Positions of the annular enclosure outer edge 266c positioned at the radial outer end than impeller 270 in the outer part.In the present embodiment, ring The axial location of the radial inner end 266g of shape cover outer edge is identical with the axial height of annular enclosure upper surface part 266a.That is, ring-type Cover outer edge 266c be from the radial outer end of annular enclosure upper surface part 266a to radial outside and axial downside it is smoothly curved Position.
The outer surface of annular enclosure outer edge 266c and the inner surface of exhaust guide part 283 are configured across gap.Moreover, Gap forms the flow path 292 for the fluid that guiding is flowed into from impeller 270.That is, from impeller 270 discharge fluid via flow path 292 and by Guide to the position that radial outside and axial downside are leaned on than impeller 270.On air-supply arrangement 201, in gap, than annular enclosure The radial inner end 266g of outer edge has ring in the outer part and than the radial outer end 266h regions in the inner part of annular enclosure outer edge The shortest first width 292a in the distance between the outer surface of shape cover outer edge 266c and the inner surface of exhaust guide part 283.Separately Outside, distance mentioned here refers to that the arbitrary point on the outer surface of annular enclosure outer edge 266c is interior with exhaust guide part 283 Air line distance formed by arbitrary point on surface.That is, the first width 292a is to consider the outer of annular enclosure outer edge 266c These are put to the distance linked up when arbitrarily putting on surface and the arbitrary point on the inner surface of exhaust guide part 283 is Length most in short-term.
First width 292a be less than the fluid in gap flow into gap inlet opening width 292b and fluid from a clearance flow The outflow opening width 292c gone out.That is, the sectional area of flow path 292 is in the outer surface of annular enclosure outer edge 266c and exhaust guide part The distance between 283 inner surface is minimum in the region of the first width.Thus, even the short situation of the length of flow path 292 Under, also the static pressure of fluid can be improved temporarily in the outside of impeller 270, so as to suppress to produce in the fluid of flowing in flow path 292 The situation of raw turbulent flow.Here, inlet opening width 292b is by the radial inner end 266g and exhaust guide part of annular enclosure outer edge Inner surface the distances that link up of radial inner end 283d.Similarly, outflow opening width 292c is by annular enclosure outer edge Radial outer end 266h and exhaust guide part 283 the distance that links up of radial outer end.
In addition, in the region that gap is the first width 292a, at least one of the outer surface of annular enclosure outer edge 266c Point can be with from axial upside towards downside and the inclined plane that radially expands.That is, can also be by making annular enclosure outer rim The outer surface of portion 266c is diametrically expanded makes the width of flow path 292 be the first width 292a to realize.Thereby, it is possible to utilize ring Shape cover outer edge 266c smoothly guides the fluid in flow path 292, and improves the static pressure of fluid.
If being more fully described, the width in gap is opposed with annular enclosure outer edge 266c in guide portion inner projection 283c Region in be the first width 292a.That is, the sectional area of flow path 292 is in guide portion inner projection 283c and annular enclosure outer edge It is minimum in region opposed 266c.Thereby, it is possible to the ideal position in exhaust guide part 283 to form guide portion inner projection 283c, forms the first width 292a in the ideal zone of flow path 292, therefore the free degree designed improves.Also, due to utilizing The region protruded laterally of annular enclosure outer edge 266c and the region protruded inwardly of exhaust guide part 283 realize first Width 292a, therefore can further reduce the sectional area of flow path 292, the static pressure in flow path 292 can be further improved.
Annular enclosure 261b has the annular enclosure peripheral part 261c from annular enclosure outer edge 266c to axial downside extension.Ring-type Cover peripheral part 261c is that outer surface is substantially circle-shaped tubular position.The edge on the radially-outer surface of annular enclosure peripheral part 261c It is arranged circumferentially to have multiple stator blades 267.Thereby, it is possible to smoothly guide to flow and in annular enclosure peripheral part in flow path 292 The fluid that the outside of 261c is flowed downward.In addition, the piece number of the piece number of stator blade 267 preferably with above-mentioned movable vane piece 274 is mutual Prime number.Thereby, it is possible to suppress to produce resonance between stator blade 267 and movable vane piece 274 when impeller 270 is rotated so as to which noise becomes Big situation.
In addition, annular enclosure outer edge 266c can also be more upwardly projecting than annular enclosure upper surface part 266a.Thereby, it is possible to suitable Freely guide the fluid discharged from impeller 270.Further, it is possible to suppress from impeller 270 discharge fluid be flowed into base portion 273 with So as to cause the situation that the air supply efficiency of air-supply arrangement 201 reduces between annular enclosure upper surface part 266a.Base portion 273 and ring-type The radial inner end for covering outer edge 266c is diametrically opposed.The upper end of annular enclosure outer edge 266c, which is preferably configured in, compares base portion The position of upper surface on the lower at 273 radial outer end.Thus, even in the assembly error that there is a situation where impeller 270 or In the case that the radial outside of impeller 270 somewhat vibrates in the up-down direction when impeller 270 rotates, it can also suppress outside annular enclosure The upper end of edge 266c is projected into the position more upper than the upper surface of base portion 273.Thereby, it is possible to suppress from 270 row of impeller The fluid gone out is collided with annular enclosure outer edge 266c, therefore the air supply efficiency that can suppress air-supply arrangement 201 reduces.
In the present embodiment, impeller 270 has shield 275, and shield 275 is configured in more upper than base portion 273 Position and it is connected with multiple movable vane pieces 274.Moreover, the radial inner end 283d of the inner surface of exhaust guide part is configured than shield The upper position in lower surface at 275 radial outer end.Thus, even there is a situation where the assembly error of impeller 270 or The situation that the radial outside of impeller 270 somewhat vibrates in the up-down direction when impeller 270 rotates, can also suppress exhaust guide part The radial inner end 283d of inner surface be projected into lower surface position on the lower than shield 275.Thereby, it is possible to suppress from impeller The fluid of 270 discharges and the radial inner end 283d of exhaust guide part are collided, therefore can suppress the air supply efficiency of air-supply arrangement 201 Reduce.
Figure 14 is the bottom view of the impeller 270 of the 3rd embodiment of the illustration of the present invention.As shown in Figure 13 and Figure 14, base The lower surface of portions 273 have be radially oriented inner side and to the concave base portion recess 273a in upside.Base portion 273 it is upper Surface be with from radially inner side towards outside and flexure plane that axial location is smoothly lower.Thus, such as in base portion 273 In the case of being resin component, in the region of radially inner side, the axial width of base portion 273 becomes larger, and it is therefore possible in resin Stomata is produced during shaping.However, by the lower surface of base portion 273 formed base portion recess 273a, can suppress into Stomata is produced during type base portion 273.Also, by forming base portion recess 273a, no matter the material of base portion 273, all The weight of base portion 273 can be mitigated, therefore fee of material can be reduced, and be easy to improve the rotary speed of impeller 270.
The multiple rib 273b circumferentially configured are configured with base portion recess 273a.Thereby, it is possible to improve base portion 273 Rigidity.In addition, multiple rib 273b are configured from the centrally directed outside of base portion 273, but the configuration of rib 273b is not limited to substantially It is radial.For example, multiple rib 273b can also be relative to the center configuration of base portion 273 on concentric circles.
Position of the radial outer end configuration of rib 273b in the radial inner end than rib 273b by the direction of rotation R rear sides of impeller Put.Thus, when impeller 270 rotates, rib 273b is realized the stream between base portion 273 and annular enclosure upper surface part 266a The effect that body is discharged to radial outside.Thus, by making rib 273b be above-mentioned structure, fluid can be suppressed and be flowed into base portion Between 273 and annular enclosure upper surface part 266a.Thus, the air supply efficiency of air-supply arrangement 201 further improves.In addition, rib 273b Radical be preferably prime number., can thereby, it is possible to reduce rib 273b and the situation of other positions resonance when impeller 270 rotates Reduce the noise that air-supply arrangement 201 produces.
Figure 15 is the amplification longitudinal section of the air-supply arrangement 301 of the 4th embodiment of the illustration of the present invention.In addition, on The air-supply arrangement 301 of 4th embodiment is pair identical with above-mentioned air-supply arrangement 1, air-supply arrangement 101 and air-supply arrangement 201 Structural element mark identical label, and the description thereof will be omitted.
In the present embodiment, in the region for being the first width 392a in gap, the outer surface of annular enclosure outer edge 366c It is the flexure plane to radial outside and axial upside protrusion.Also, the inner surface of exhaust guide part 383 have to radial outside and The axial concave guide portion inner recess 383b in upside.It is different from air-supply arrangement 201, in air-supply arrangement 301, exhaust guide part 383 do not possess guide portion inner projection.Moreover, the radius of curvature r1 of the outer surface of annular enclosure outer edge is less than exhaust guide part The radius of curvature r2 of inner surface.That is, the inner surface of exhaust guide part 383 is gently more curved than the outer surface of annular enclosure outer edge 366c It is bent.Thus, the fluid of flowing is smoothly guided on the downside of radial outside and axial direction in flow path 392.Moreover, in flow path 392 In the region of an interior part, gap is the first width 392a.Thereby, it is possible to make the flowing of fluid smooth and can be in flow path Improve the static pressure of fluid in the region of a part in 392.
In the present embodiment, the interior table of the radial position of the radial inner end 366g of annular enclosure outer edge and exhaust guide part The radial position of the radial inner end 383d in face is identical.That is, the border of annular enclosure upper surface part 366a and annular enclosure outer edge 366c The radial inner end 383d of the inner surface of region and exhaust guide part is opposed in the axial direction.Thereby, it is possible in the outer end of impeller 370 Flow path 392 with smooth curvature is formed by annular enclosure outer edge 366c and exhaust guide part 383.Thereby, it is possible to further Improve the air supply efficiency of air-supply arrangement 301.Also, in air-supply arrangement 301, the footpath of the radial inner end 366g of annular enclosure outer edge It is identical with the radial position of the radial outer end of impeller 370 to position.In addition, in the radial inner end for being difficult to judge annular enclosure outer edge In the case of the radial position of 366g, as long as by the radial outside in annular enclosure upper surface part 366a, the area from roughly planar Domain is changing into radial inner end 366g of the smooth curved place as annular enclosure outer edge.Similarly, it is being difficult to sentence In the case of the radial position of the radial inner end 383d of the inner surface of disconnected exhaust guide part, as long as by the interior table of impeller housing 380 In region in face near the radial outside of impeller 370, from the regional change of roughly planar into smooth curved place Radial inner end 366g as annular enclosure outer edge.
Have on the lower surface of base portion 373 to concave base portion recess 373a on the upside of axial direction, annular enclosure upper surface Portion 366a has Medial extrusion 366i.Medial extrusion 366i leans on the position of radially inner side in the radial outer end than impeller 370 Axis position to the upper side is leaned in the lower end being projected into than pedestal lower surface.Medial extrusion 366i and base portion recess 373a is extremely A few part is opposed across gap in the axial direction.Thereby, it is possible to form base portion recess 373a in base portion 373, and Suppress to be flowed between annular enclosure upper surface part 366a and Medial extrusion 366 from the fluid that impeller 370 is discharged.
Figure 16 is the stereogram of dust catcher 100.The air-supply arrangement 1,101,201,301 of the embodiment illustrated of the present invention Such as it is equipped on dust catcher 100.Thus, the air supply efficiency of dust catcher 100 can improve.In addition, air-supply arrangement 1,101, 201st, 301 it is not limited to be equipped on dust catcher 100, can be also equipped on other electrical equipments.
Industrial applicability
The air-supply arrangement of the present invention is such as can be used in dust catcher.
Label declaration
1、101、201、301：Air-supply arrangement；
100：Dust catcher；
10、210：Motor；
20：Housing；
21：Cylindric perisporium；
22：Lower cover；
22a：Through hole；
22b：Notch；
22c：Downside bearing cage；
23：Upper cover part；
23a：Threaded hole；
24：Open lower side portion；
25、26：Housing upper through hole；
27：Upside bearing maintaining part；
28：Stage portion；
28a：Step surface；
30：Rotor；
31、231：Axis；
32：Downside magnet fixed component；
33：Rotor magnet；
34：Upper magnet fixed component；
34a：Small diameter portion；
40：Stator；
41：Stator core；
41a：Core-back；
41b：Teeth portion；
41c：Line part；
41d：Arc sections；
42：Coil；
43：Upside insulating part；
43a：Upside periphery wall portion；
43b：First side end face；
43c：Second side end face；
43d：Upside insulation division；
43e：Upside inner circumferential wall portion；
43f：Upside tabular surface；
44：Lower-side insulation part；
44a：Lower outer periphery wall portion；
44b：Lower-side insulation portion；
44c：Downside inner circumferential wall portion；
44d：Downside tabular surface；
45：Plate-like portion；
46：Tilt component；
50：Circuit board；
51：Turn-sensitive device；
52a、252a：Lower side bearing；
52b、252b：Upside bearing；
60：Stator blade chip part；
61a：First stator blade chip part；
61b、166：Ring-type cover portion；
261b：Annular enclosure；
261c：Annular enclosure peripheral part；
62：Lower part stator blade support ring；
63：Installing ring；
64：Linking part；
65：Outlet；
66a、166a：Annular enclosure planar portions；
266a、366a：Annular enclosure upper surface part；
66b：Top stator blade support ring；
66c、166c：Protuberance；
266c、366c：Annular enclosure outer edge；
66d：Stage portion；
66e、166e：Inclined plane；
166f：Annular enclosure connecting portion；
166g：The inner of protuberance；
266g、366g：The radial inner end of annular enclosure outer edge；
266h：The radial outer end of annular enclosure outer edge；
366i：Medial extrusion；
267：Stator blade；
67a：Top stator blade；
67b：Lower part stator blade；
67c：Gap；
68：Installing ring；
69：Cylindrical protrusion；
70、270、370：Impeller；
73、273、373：Base portion；
273a、373a：Base portion recess；
273b：Rib；
74、274：Movable vane piece；
75、275：Shield；
80、180、280、380：Impeller housing；
83、183、283、383：Exhaust guide part；
83b、183b、283b、383b：Guide portion inner recess；
83c、183c、283c：Guide portion inner projection；
183d：The inner of exhaust guide part；
283d、383d：The radial inner end of the inner surface of exhaust guide part；
292、392：Flow path；
292a、392a：First width；
292b：Inlet opening width；
292c：Outflow opening width；
95、195：Exhaust outlet；
196：Inboard row gas port；
J：Central axis；
R：The direction of rotation of impeller；
r1：The radius of curvature of the outer surface of annular enclosure outer edge；
r2：The radius of curvature of the inner surface of exhaust guide part.

Claims (18)

1. a kind of air-supply arrangement, it has：
Motor, it has the axis configured along the central axis extended in the up-down direction；
Annular enclosure, it is located at leans on axis position to the upper side than the motor；
Impeller, it is fixed on the axis；And
Impeller housing, it surrounds the top of the impeller and radial outside,
The impeller has：
Base portion, it is extended up in the side vertical with the axis；And
Movable vane piece, it is connected with the base portion, is circumferentially arranged with multiple movable vane pieces,
Position of the impeller housing in the radial outer end than the impeller in the outer part has the row extended to radial outside and downside Gas guide portion,
The annular enclosure has：
Annular enclosure upper surface part, it is extended up in the side vertical with the axis, opposed in the axial direction with the base portion；And
Annular enclosure outer edge, its position positioned at the radial outer end than the impeller in the outer part,
The outer surface of the annular enclosure outer edge and the inner surface of the exhaust guide part are configured across gap, and it is described between Gap forms the flow path guided to the fluid flowed into from the impeller,
In the gap, in the radial inner end than the annular enclosure outer edge in the outer part and than the annular enclosure outer edge The region of radial outer end in the inner part, has between the outer surface of the annular enclosure outer edge and the inner surface of the exhaust guide part Shortest first width of distance,
First width be less than fluid described in the gap flow into the gap inlet opening width and the fluid from The outflow opening width of the gap outflow.
2. air-supply arrangement according to claim 1, wherein,
In the gap in the region of first width, the outer surface of the annular enclosure outer edge be to radial outside and to The flexure plane of axial upside protrusion,
The radius of curvature of the outer surface of the annular enclosure outer edge is less than the radius of curvature of the inner surface of the exhaust guide part.
3. air-supply arrangement according to claim 1, wherein,
In the gap in the region of first width, at least a portion of the outer surface of the annular enclosure outer edge be with From axial upside towards downside and the inclined plane diametrically expanded.
4. the air-supply arrangement according to claim 1 or 3, wherein,
The exhaust guide part has：The inner surface is to the concave guide portion inner recess of radial outside；With configuration than institute State the position that guide portion inner recess is leaned on the downside of axial and the inner surface is convex to the guide portion inner side that radially inner side is heaved Portion,
The width in the gap is described in the guide portion inner projection region opposed with the annular enclosure outer edge One width.
5. the air-supply arrangement described in any one in Claims 1-4, wherein,
The annular enclosure outer edge is more upwardly projecting than the annular enclosure upper surface part.
6. air-supply arrangement according to claim 5, wherein,
The base portion and the radial inner end of the annular enclosure outer edge are diametrically opposed,
The upper end of the annular enclosure outer edge is configured in the position of upper surface on the lower at the radial outer end than the base portion Put.
7. the air-supply arrangement described in any one in claim 1 to 6, wherein,
The impeller has shield, which is configured in the position more upper than the base portion, and is moved with the multiple Blade connects,
The lower surface that the radial inner end of the inner surface of the exhaust guide part is configured at the radial outer end than the shield is leaned on The position of upside.
8. the air-supply arrangement described in any one in claim 1 to 7, wherein,
The radial position of the radial inner end of the annular enclosure outer edge and the radial inner end of the inner surface of the exhaust guide part Radial position is identical.
9. the air-supply arrangement described in any one in claim 1 to 8, wherein,
The annular enclosure has the annular enclosure peripheral part from the annular enclosure outer edge to axial downside extension,
Multiple stator blades are circumferentially configured with the radially-outer surface of the annular enclosure peripheral part.
10. the air-supply arrangement described in any one in claim 1 to 9, wherein,
The lower surface of the base portion have be radially oriented inner side and to the concave base portion recess in upside.
11. air-supply arrangement according to claim 10, wherein,
The annular enclosure upper surface part has Medial extrusion in the radial outer end than the impeller by the position of radially inner side, should Medial extrusion is more upwardly projecting to axis than the lower end of the pedestal lower surface,
The Medial extrusion is opposed in the axial direction across gap with least a portion of the base portion recess.
12. air-supply arrangement according to claim 10, wherein,
The multiple ribs circumferentially configured are configured with the base portion recess.
13. air-supply arrangement according to claim 12, wherein,
The radial outer end of the rib is configured in position of the radial inner end than the rib by the direction of rotation rear side of the impeller Put.
14. a kind of air-supply arrangement, it has：
Motor, it has the axis configured along the central axis extended in the up-down direction；
Ring-type cover portion, it is located at leans on axis position to the upper side than the motor；
Impeller, it is fixed on the axis；And
Impeller housing, it surrounds the top of the impeller and radial outside,
The impeller has：
Flat base portion, it is extended up in the side vertical with the axis；
Shield, it is located at the position more upper than the base portion, and upward side opening；And
Movable vane piece, it is connected with the base portion and the shield, is circumferentially arranged with multiple movable vane pieces,
Position of the impeller housing in the radial outer end than the impeller in the outer part has the row extended to radial outside and downside Gas guide portion,
The ring-type cover portion has：
Annular enclosure planar portions, it is extended up in the side vertical with the axis, opposed in the axial direction with the base portion；And
Protuberance, its position in the radial outer end than the impeller in the outer part is more upwardly projecting than the annular enclosure planar portions, And with outer circumferential surface with being radially oriented outside and inclined inclined plane downwards,
The exhaust guide part has：The concave guide portion inner recess of inner peripheral surface；With positioned at than the guide portion inner recess The guide portion inner projection that position and inner peripheral surface on the lower is heaved,
The distance between the inclined plane and inner peripheral surface of the exhaust guide part incline in the guide portion inner projection with described To be most short in the opposed region in inclined-plane.
15. air-supply arrangement according to claim 14, wherein,
The inner radial position of the protuberance is identical with the inner radial position of the exhaust guide part.
16. the air-supply arrangement described in any one in claim 1 to 15, wherein,
The radial outer end of the motor leans on the position of radial outside positioned at the radial outer end than the impeller,
The impeller housing has exhaust outlet in the position more upper than the bottom of the ring-type cover portion.
17. the air-supply arrangement described in any one in claim 1 to 16, wherein,
At least a portion of the impeller housing and at least a portion of the ring-type cover portion are fixed.
18. a kind of dust catcher, wherein,
The air-supply arrangement described in any one that the dust catcher is had the right in requirement 1 to 17.
CN201680052101.0A 2015-09-10 2016-08-24 Air supply device and dust collector Active CN108026937B (en)

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JPWO2017043318A1 (en) 2018-07-26
US20180235417A1 (en) 2018-08-23
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US10638900B2 (en) 2020-05-05
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WO2017043318A1 (en) 2017-03-16
EP3348843A4 (en) 2019-04-17

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